EP3715171B1 - Flexprint for energy storage module - Google Patents

Flexprint for energy storage module Download PDF

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Publication number
EP3715171B1
EP3715171B1 EP19165113.2A EP19165113A EP3715171B1 EP 3715171 B1 EP3715171 B1 EP 3715171B1 EP 19165113 A EP19165113 A EP 19165113A EP 3715171 B1 EP3715171 B1 EP 3715171B1
Authority
EP
European Patent Office
Prior art keywords
energy storage
flexprint
storage module
elements
sections
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19165113.2A
Other languages
German (de)
French (fr)
Other versions
EP3715171A1 (en
Inventor
Stefan Wicki
Stefan Pfister
Matthias SCHUME
Tanja SUTTER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Schweiz AG
Original Assignee
ABB Schweiz AG
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Application filed by ABB Schweiz AG filed Critical ABB Schweiz AG
Priority to EP19165113.2A priority Critical patent/EP3715171B1/en
Publication of EP3715171A1 publication Critical patent/EP3715171A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/12—Recording operating variables ; Monitoring of operating variables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/66—Arrangements of batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/517—Methods for interconnecting adjacent batteries or cells by fixing means, e.g. screws, rivets or bolts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
    • H01M50/522—Inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/581—Devices or arrangements for the interruption of current in response to temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/547—Voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/549—Current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/10—Temperature sensitive devices
    • H01M2200/103—Fuse

Definitions

  • the invention relates to an energy storage module, such as a battery module.
  • Electric and hybrid vehicles need means for storing electric energy.
  • battery modules and capacitor modules are used to provide these means.
  • an energy storage module a plurality of energy storage elements may be assembled and interconnected.
  • voltages of battery cells may have to be measured to prevent over- and undercharging.
  • a battery cell When a battery cell is used outside an allowed voltage window, it may be damaged. It may be that a cell voltage of at least every parallel connected battery cell has to be measured. It also may be beneficial to perform temperature measurements to prevent damaging of battery cells due to too fast charging and discharging.
  • the measurement unit may be connected with wires to sensors and sensing points in the battery module.
  • US 2017 005 371 A1 relates to a vehicle energy-storage system, which comprises a plurality of prismatic cells stacked in a frame.
  • a current carrier which is connected to the poles of the cells, comprises several layers and may be made of a flexible circuit board.
  • the current carrier may have a signal plane. Also module monitoring boards are mentioned.
  • US 2015 069 829 A1 relates to a battery module, which is made of a plurality of battery cells and which has flexible cell interconnects.
  • US2019/033387A1 discloses an energy storage module, wherein a flexible substrate is provided as a single rectangular strip The flexprint comprises connector elements with conductor areas printed on the flexible plastics substrate for connecting the flexprint to the electrical conducting parts of the energy storage module and to the sensor board.
  • EP2416435A1 discloses a battery module comprising a battery block composed of a plurality of battery cells, and a voltage detecting circuit, wherein a flexible printed circuit board, in which a voltage detecting line for electrically connecting a positive electrode terminal or a negative electrode terminal of each of said battery cells and said voltage detecting circuit is integrated with a substrate made of a flexible material, is attached to said battery block.
  • the invention relates to an energy storage module.
  • the energy storage module may be used in an electric and/or hybrid vehicle, such as an electric car, an electric train, an electric tram, etc. for storing electric energy, which is used for driving the vehicle.
  • the energy storage module may be used in traction applications and/or may be used in a traction vehicle.
  • the energy storage module comprises a plurality of energy storage elements arranged in a holding frame, wherein the energy storage elements adapted for storing electric energy are electrically interconnected via their poles between inputs of the energy storage module.
  • the energy storage elements may be battery cells and/or capacitors.
  • prismatic battery cells may be used as storage elements.
  • the energy storage elements may be connected in parallel and/or in series via their poles, for example with electrical conducting elements, such as metal plates or wires.
  • electrical conducting elements such as metal plates or wires.
  • the energy storage elements may be assembled in a holding frame, which may be made of metal sheets and/or plastics elements.
  • the energy storage module comprises a sensor board.
  • the sensor board may be seen as a module measurement unit.
  • the sensor board comprises a rigid circuit board with an electronic circuit for evaluating voltage measurements in the energy storage module.
  • a rigid circuit board may comprise a rigid plastics plate with conductors provided in or on the plastics plate.
  • the electronic circuit may comprise electronics elements attached to the rigid circuit board.
  • the sensor board may be attached to the holding frame of the energy storage module.
  • the energy storage module comprises a flexprint with conductor lines on or in a flexible plastics substrate for interconnecting the sensor board with electrical conducting parts of the energy storage module.
  • a flexprint may be a flexible circuit board.
  • the flexprint may comprise conductors, such as conductor lines provided in or on the flexible substrate, such as a plastics foil.
  • the conductor lines and/or the conductors may be printed on the flexible plastics substrate or a foil thereof.
  • Flexible may mean that the plastics substrate and/or the flexprint is bendable up to 90° without being damaged.
  • the flexprint may provide a signal connection between the energy storage elements and the sensor board. This may be used for voltage measurements and optionally for temperature measurements.
  • the flexprint Since a plurality of conductors are combined in one member, i.e. the flexprint, mounting of the interconnections between the sensor board and the other parts of the module may be simplified and less error prone. Furthermore, the positioning of the conductor lines may be defined by the shape of the flexprint, which may make the measurement more accurate.
  • the flexprint comprises connector elements, the connector elements comprising conductor areas for connecting the flexprint to electrical conducting parts of the energy storage module and to the sensor board.
  • the connector elements are provided at the ends of strip-shaped or strip-like sections of the flexprint, which may be called strip sections.
  • a connector element may have a larger diameter as the strip-like section connected thereto.
  • the conductor area also may be printed on the flexible plastics substrate. The conductor area may have a diameter 10 times larger than a diameter of a conductor line in the strip-like section.
  • the conductor element connected to the sensor board may comprise a plurality of conductor areas.
  • the flexprint comprises elongated strip sections, which interconnect the connector elements and which comprise at least one conductor line connecting the conductor areas of different connector elements.
  • An elongated strip section may be shaped strip-like.
  • One or more conductor lines may run along an extension direction of the strip sections. Elongated may mean that a diameter (extending in a plane, in which the flexprint extends) of the strip section is at least 5 times smaller than a length of the strip section.
  • the flexprint comprises a main branch connected to the connector element of the sensor board, the main branch comprising a plurality of parallel running conductor lines.
  • the main branch may be a strip section, which collects the conductor lines running to different parts of the module.
  • the flexprint comprises a plurality of strip sections branching off the main branch.
  • the branching strip sections interconnect a connector element with the main branch.
  • the flexprint may be T-shaped.
  • strip sections are S-shaped bent.
  • strip sections branching off the main branch may be S-shaped.
  • An S-shape and/or S-curve in the flexprint may handle and/or compensate tolerances between the electrical conducting elements to which the conduction areas should be attached.
  • a conductor line comprises a fuse section, which has a thinner diameter compared to neighbouring sections and which is adapted for melting when an overcurrent is applied.
  • the diameter may be determined in a direction along a plane, in which the flexprint extends or in a direction orthogonal to this plane.
  • the fuse section may have a higher resistance as the neighbouring sections of the conductor line.
  • the fuse section is wave-like or meander-like shaped.
  • the thin section of the conductor line optionally in combination with a wave-like or meander-like shape may act as fuse to prevent destroying of other parts of the energy storage module itself and/or to prevent a discharge of the energy storage elements.
  • the flexprint may be exchanged to repair the module.
  • a fuse section is provided in a strip section branching off a main branch of the flexprint. It may be that a fuse section is provided in every strip section interconnecting a conductor area with the sensor board.
  • wave-like or meander-like shaped sections of the conductor line also may be used for resistance matching.
  • a conductor line comprises sections of different diameters. These sections may be used for resistance matching. Resistance matching between conductor lines may be used to compensate longer distances to have conductor lines with equal resistance. This may improve the comparability of voltage measurements at different positions. With resistance matching, the same voltage drop along the conductor lines may be achieved.
  • sections of conductor lines with a thinner diameter are located nearer to the sensor board than sections with a thicker diameter.
  • the diameter may be determined in a direction along a plane, in which the flexprint extends or in a direction orthogonal to this plane. It may be that conductor lines nearer to the sensor board are thinner and that conductor lines, which are located more far away, are wider.
  • a temperature sensor of the energy storage module is connected to a connector element of the flexprint.
  • the temperature sensor may be connected via a conductor line of the flexprint to the sensor board.
  • the sensor board also may evaluate signals from the temperature sensor, which may measure temperatures of the energy storage elements.
  • the temperature sensor may be mounted to a rigid circuit board, which is connected to a connector element of the flexprint.
  • the electrical conducting parts to which the flexprint is connected are electrically connected to poles of the energy storage elements.
  • the connector areas of the flexprint are connected to metal plates and/or wires, which are in electrical contact with the poles.
  • the flexprint is arranged in one plane on a side of the energy storage module. It may be that the flexprint itself is flat and is not or substantially not bent, when mounted to the module.
  • the holding frame in which the energy storage elements are arranged provides brackets, which hold strip sections of the flexprint.
  • the flexprint may be mounted and/or mechanically connected to the module.
  • the frame may provide further mounting points in the form of brackets.
  • the brackets may be L-shaped and/or strip sections of the flexprint may be pushed under the brackets during mounting.
  • the energy storage elements are arranged, such that their poles are arranged on a pole side of the energy storage module.
  • the poles of the energy storage elements all may be directed in the same direction.
  • the energy storage elements may have prismatic housings, which are arranged in the frame side by side. Every energy storage element may be pushed into the frame and pulled out of the frame during mounting and/or repair.
  • the flexprint may be arranged on the pole side of the module, i.e. the side, where the poles of the energy storage elements are arranged.
  • the flexprint may be mounted above the poles and the conductors interconnecting the poles.
  • the poles of adjacent energy storage elements are interconnected with interconnector plates.
  • Such an interconnector plate may be a metal plate that is attached to two or more poles of neighbouring energy storage elements.
  • Some or all of the connector elements of the flexprint may be connected to interconnector plates.
  • the connector areas of the connector elements may be in electrical contact with the respective interconnector elements and/or may transmit the voltage signal from there to the sensor board.
  • Fig. 1 shows a top view of a part of an energy storage module 10, which comprises a frame 12 and a plurality of energy storage elements 14, which may be battery cells and/or capacitors with a prismatic housing.
  • Each of the energy storage elements 14 comprises two poles 16.
  • the poles of a first energy storage element 14a are referenced with 16a and the poles of a second energy storage element 14b are referenced with 16b.
  • the energy storage elements 14a, 14b are electrically connected in parallel via two interconnector plates 18.
  • Further pairs of electrically parallel connected energy storage elements 14 are arranged in a row with the first pair 14a, 14b. These pairs of energy storage elements are connected in series. As shown in Fig. 1 , further rows of energy storage elements 14 may be provided in the energy storage module 10, which also may comprise pairs of electrically parallel connected energy storage elements 14, which are connected in series with each other and with the first row.
  • the first pair of energy storage elements 14a, 14b are connected to an input 20 of the energy storage module 10.
  • the last row of energy storage elements may be connected to a further input.
  • All the energy storage elements 14 are arranged such that their poles 16 are aligned in one plane on one side of the energy storage module 10, which may be seen as the top side. It has to be noted that the energy storage module 10 in general may be attached to an electric and/or hybrid vehicle, such that this side faces in any direction with respect to a vertical direction.
  • the poles 16 are electrically connected via interconnector plates 18, which may be metal plates for example made of copper or aluminium. Each of the interconnector plates 18 may be attached (such as screwed) to two or four poles 16. The interconnector plates 18 may be arranged in one plane.
  • Fig. 1 furthermore shows a sensor board 22, which comprises a rigid circuit board 23 and an electronic circuit, which is adapted for evaluating voltage and temperature measurements in the energy storage module 10. It may be that circuit board 23 comprises a plug into which further components of the sensor board 22 are plugged, such as a further rigid circuit board, which provided the electronic circuit.
  • the sensor board 22 and/or the rigid circuit board 23 are electrically connected via a flexprint 24 with the interconnector plates 18 and thus to the poles 16 of the interconnector plates 18.
  • the flexprint 24 may be arranged in a plane above the poles 16.
  • the flexprint 24 also provides an electrical connection to a temperature sensor 25, which is arranged on an opposite side of the energy storage module 10 with respect to the sensor board.
  • the flexprint 24 is composed of strip-like sections 26, which are interconnected in the form of a tree. Some of the strip-like sections 26 are pushed under brackets 28 of the frame 12, which may be L-shaped. The brackets 28 may be provided by a part of the frame 12, which is made of plastics.
  • the flexprint 24 furthermore comprises connector elements 30 at the ends of the sections 26, which are attached to the interconnector plates 18 and to the sensor board 22.
  • the connector elements 30, which arc attached to an interconnector plate 18, may be connected to the interconnector plate 18 by a screw 32.
  • the flexprint 24 comprises a one-piece flexible plastics substrate 34, which may be single plastics foil and/or several plastics foils connected to layers of the flexprint 24. Furthermore, the flexprint comprises at least one conducting layer 36, which is provided on or in the flexible plastics substrate 34. For example, the conducting layer 36 is printed on a plastics foil of the flexible plastics substrate 34.
  • the conducting layer 36 may be made of metal material, such as copper.
  • the conducting layer 36 provides conductors of the flexprint 24, such as conductor lines 38 and conductor areas 40.
  • the conductor areas 40 are arranged in the connector elements 30a, 30b, 30c, 30d of the flexprint 24, while the conductor lines 38 are also arranged in the strip-like sections 26 of the flexprint 24.
  • the connector element 30a is used for connecting the flexprint 24 to the sensor board 22 and/or comprises a plurality of conductor areas 40.
  • the connector elements 30b, 30c are used for connecting the flexprint 24 to interconnector plates 18.
  • the conductor lines 38 connected to the corresponding conductor areas 40 are used for transmitting a voltage signal from the interconnector plates 18 to the sensor board 22.
  • the connector element 30c is additionally used for electrically connecting the temperature sensor 25 to the sensor board 22.
  • a corresponding conductor line 38 is not shown and may be provided besides the shown conductor lines or in another layer of the flexprint 24.
  • the connector element 30d is used for solely mechanically fixating the flexprint 24 to the module 10. Its optional contact area 40 is not connected to a conductor line.
  • the flexprint 24 is tree-shaped and comprises a main branch 26a and branching strip sections 26b, which branch off the main branch 26a.
  • the main branch 26a and/or the strip sections 26b may comprise parts 42, which are S-shaped bent to compensate for tolerances of the parts of the module 10, the flexprint 24 is mounted to.
  • a plurality of conductor lines 38 run parallel with each other.
  • one or none conductor line 38 is running.
  • All conductor lines 38 which are used for transmitting measurement signals for voltage measurements at poles 16, comprise a fuse section 44, which has a thinner diameter compared to neighbouring sections of the conductor line and which is adapted for melting when an overcurrent is applied.
  • the fuse sections 44 are wave-like or meander-like shaped.
  • resistor sections 46 which may be wave-like or meander-like shaped, may be used for resistance matching.
  • a resistor section 46 may have the same diameter compared to neighbouring sections of the conductor line 38.
  • the fuse sections 44 and also the resistor sections 46) may be provided in the strip sections 26b, which branch off a main branch.
  • a further means for resistance matching are sections or parts 48a, 48b, 48c, 48d of the conductor lines 38, which have different diameters. As shown in Fig. 2A and 2B , there may be sections 48a, 48b, 48c, 48d with four different diameters. Sections 48a, 48b, 48c with a thinner diameter are located nearer to the sensor board 22 than sections 48b, 48c, 48d with a thicker diameter. The diameters of the sections 48a, 48b, 48c, 48d are increasing with increasing distance to the sensor beard 22.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Inorganic Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Description

    FIELD OF THE INVENTION
  • The invention relates to an energy storage module, such as a battery module.
    • BACKGROUND OF THE INVENTION
  • Electric and hybrid vehicles need means for storing electric energy. Usually, battery modules and capacitor modules are used to provide these means. In such an energy storage module, a plurality of energy storage elements may be assembled and interconnected.
  • In particular in battery modules, voltages of battery cells may have to be measured to prevent over- and undercharging. When a battery cell is used outside an allowed voltage window, it may be damaged. It may be that a cell voltage of at least every parallel connected battery cell has to be measured. It also may be beneficial to perform temperature measurements to prevent damaging of battery cells due to too fast charging and discharging.
  • These measurements usually are performed with a measurement unit integrated into the battery module. The measurement unit may be connected with wires to sensors and sensing points in the battery module.
  • US 2017 005 371 A1 relates to a vehicle energy-storage system, which comprises a plurality of prismatic cells stacked in a frame. A current carrier, which is connected to the poles of the cells, comprises several layers and may be made of a flexible circuit board. The current carrier may have a signal plane. Also module monitoring boards are mentioned.
  • US 2015 069 829 A1 relates to a battery module, which is made of a plurality of battery cells and which has flexible cell interconnects. US2019/033387A1 discloses an energy storage module, wherein a flexible substrate is provided as a single rectangular strip The flexprint comprises connector elements with conductor areas printed on the flexible plastics substrate for connecting the flexprint to the electrical conducting parts of the energy storage module and to the sensor board.
  • EP2416435A1 discloses a battery module comprising a battery block composed of a plurality of battery cells, and a voltage detecting circuit, wherein a flexible printed circuit board, in which a voltage detecting line for electrically connecting a positive electrode terminal or a negative electrode terminal of each of said battery cells and said voltage detecting circuit is integrated with a substrate made of a flexible material, is attached to said battery block.
    • DESCRIPTION OF THE INVENTION
  • It is an objective of the invention to provide an economic and reliable energy storage module. It is a further objective of the invention to improve the accuracy of measurements in an energy storage module.
  • These objectives are achieved by the subject-matter of the independent claims. Further exemplary embodiments are evident from the dependent claims and the following description.
  • The invention relates to an energy storage module. For example, the energy storage module may be used in an electric and/or hybrid vehicle, such as an electric car, an electric train, an electric tram, etc. for storing electric energy, which is used for driving the vehicle. In particular, the energy storage module may be used in traction applications and/or may be used in a traction vehicle.
  • According to the invention, the energy storage module comprises a plurality of energy storage elements arranged in a holding frame, wherein the energy storage elements adapted for storing electric energy are electrically interconnected via their poles between inputs of the energy storage module.
  • The energy storage elements may be battery cells and/or capacitors. For example, prismatic battery cells may be used as storage elements. The energy storage elements may be connected in parallel and/or in series via their poles, for example with electrical conducting elements, such as metal plates or wires. Mechanically, the energy storage elements may be assembled in a holding frame, which may be made of metal sheets and/or plastics elements.
  • According to the invention, the energy storage module comprises a sensor board. The sensor board may be seen as a module measurement unit. The sensor board comprises a rigid circuit board with an electronic circuit for evaluating voltage measurements in the energy storage module. A rigid circuit board may comprise a rigid plastics plate with conductors provided in or on the plastics plate. The electronic circuit may comprise electronics elements attached to the rigid circuit board. The sensor board may be attached to the holding frame of the energy storage module.
  • According to the invention, the energy storage module comprises a flexprint with conductor lines on or in a flexible plastics substrate for interconnecting the sensor board with electrical conducting parts of the energy storage module. A flexprint may be a flexible circuit board. The flexprint may comprise conductors, such as conductor lines provided in or on the flexible substrate, such as a plastics foil. The conductor lines and/or the conductors may be printed on the flexible plastics substrate or a foil thereof.
  • Flexible may mean that the plastics substrate and/or the flexprint is bendable up to 90° without being damaged.
  • The flexprint may provide a signal connection between the energy storage elements and the sensor board. This may be used for voltage measurements and optionally for temperature measurements.
  • Since a plurality of conductors are combined in one member, i.e. the flexprint, mounting of the interconnections between the sensor board and the other parts of the module may be simplified and less error prone. Furthermore, the positioning of the conductor lines may be defined by the shape of the flexprint, which may make the measurement more accurate.
  • According to the invention, the flexprint comprises connector elements, the connector elements comprising conductor areas for connecting the flexprint to electrical conducting parts of the energy storage module and to the sensor board. The connector elements are provided at the ends of strip-shaped or strip-like sections of the flexprint, which may be called strip sections. A connector element may have a larger diameter as the strip-like section connected thereto. The conductor area also may be printed on the flexible plastics substrate. The conductor area may have a diameter 10 times larger than a diameter of a conductor line in the strip-like section.
  • The conductor element connected to the sensor board may comprise a plurality of conductor areas.
  • According to an embodiment of the invention, the flexprint comprises elongated strip sections, which interconnect the connector elements and which comprise at least one conductor line connecting the conductor areas of different connector elements. An elongated strip section may be shaped strip-like. One or more conductor lines may run along an extension direction of the strip sections. Elongated may mean that a diameter (extending in a plane, in which the flexprint extends) of the strip section is at least 5 times smaller than a length of the strip section.
  • According to the invention, the flexprint comprises a main branch connected to the connector element of the sensor board, the main branch comprising a plurality of parallel running conductor lines. The main branch may be a strip section, which collects the conductor lines running to different parts of the module.
  • According to the invention, the flexprint comprises a plurality of strip sections branching off the main branch. The branching strip sections interconnect a connector element with the main branch. At a connection area of the main branch with a branching strip section, the flexprint may be T-shaped.
  • According to an embodiment of the invention, strip sections are S-shaped bent. In particular, strip sections branching off the main branch may be S-shaped. An S-shape and/or S-curve in the flexprint may handle and/or compensate tolerances between the electrical conducting elements to which the conduction areas should be attached.
  • According to an embodiment of the invention, a conductor line comprises a fuse section, which has a thinner diameter compared to neighbouring sections and which is adapted for melting when an overcurrent is applied. The diameter may be determined in a direction along a plane, in which the flexprint extends or in a direction orthogonal to this plane. The fuse section may have a higher resistance as the neighbouring sections of the conductor line.
  • According to an embodiment of the invention, the fuse section is wave-like or meander-like shaped. The thin section of the conductor line optionally in combination with a wave-like or meander-like shape may act as fuse to prevent destroying of other parts of the energy storage module itself and/or to prevent a discharge of the energy storage elements. The flexprint may be exchanged to repair the module.
  • According to an embodiment of the invention, a fuse section is provided in a strip section branching off a main branch of the flexprint. It may be that a fuse section is provided in every strip section interconnecting a conductor area with the sensor board.
  • It is also possible that wave-like or meander-like shaped sections of the conductor line also may be used for resistance matching.
  • According to an embodiment of the invention, a conductor line comprises sections of different diameters. These sections may be used for resistance matching. Resistance matching between conductor lines may be used to compensate longer distances to have conductor lines with equal resistance. This may improve the comparability of voltage measurements at different positions. With resistance matching, the same voltage drop along the conductor lines may be achieved.
  • According to an embodiment of the invention, sections of conductor lines with a thinner diameter are located nearer to the sensor board than sections with a thicker diameter. Again, the diameter may be determined in a direction along a plane, in which the flexprint extends or in a direction orthogonal to this plane. It may be that conductor lines nearer to the sensor board are thinner and that conductor lines, which are located more far away, are wider.
  • According to an embodiment of the invention, a temperature sensor of the energy storage module is connected to a connector element of the flexprint. The temperature sensor may be connected via a conductor line of the flexprint to the sensor board. The sensor board also may evaluate signals from the temperature sensor, which may measure temperatures of the energy storage elements.The temperature sensor may be mounted to a rigid circuit board, which is connected to a connector element of the flexprint.
  • According to an embodiment of the invention, the electrical conducting parts to which the flexprint is connected are electrically connected to poles of the energy storage elements. For example, the connector areas of the flexprint are connected to metal plates and/or wires, which are in electrical contact with the poles.
  • According to an embodiment of the invention, the flexprint is arranged in one plane on a side of the energy storage module. It may be that the flexprint itself is flat and is not or substantially not bent, when mounted to the module.
  • According to an embodiment of the invention, the holding frame in which the energy storage elements are arranged provides brackets, which hold strip sections of the flexprint. At the connector elements, the flexprint may be mounted and/or mechanically connected to the module. The frame may provide further mounting points in the form of brackets. The brackets may be L-shaped and/or strip sections of the flexprint may be pushed under the brackets during mounting.
  • According to an embodiment of the invention, the energy storage elements are arranged, such that their poles are arranged on a pole side of the energy storage module. The poles of the energy storage elements all may be directed in the same direction. The energy storage elements may have prismatic housings, which are arranged in the frame side by side. Every energy storage element may be pushed into the frame and pulled out of the frame during mounting and/or repair.
  • The flexprint may be arranged on the pole side of the module, i.e. the side, where the poles of the energy storage elements are arranged. The flexprint may be mounted above the poles and the conductors interconnecting the poles.
  • According to an embodiment of the invention, the poles of adjacent energy storage elements are interconnected with interconnector plates. Such an interconnector plate may be a metal plate that is attached to two or more poles of neighbouring energy storage elements.
  • Some or all of the connector elements of the flexprint may be connected to interconnector plates. The connector areas of the connector elements may be in electrical contact with the respective interconnector elements and/or may transmit the voltage signal from there to the sensor board.
  • These and other aspects of the invention will be apparent from and elucidated with reference to the embodiments described hereinafter.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The subject-matter of the invention will be explained in more detail in the following text with reference to exemplary embodiments which are illustrated in the attached drawings.
    • Fig. 1 shows a top view of an energy storage module according to an embodiment of the invention.
    • Fig. 2 shows a top view of a first part of a flexprint used in the energy storage module used in Fig. 1.
    • Fig. 3 shows a top view of a second part of the flexprint of Fig. 2.
  • The reference symbols used in the drawings, and their meanings, are listed in summary form in the list of reference symbols. In principle, identical parts are provided with the same reference symbols in the figures.
    • DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS
  • Fig. 1 shows a top view of a part of an energy storage module 10, which comprises a frame 12 and a plurality of energy storage elements 14, which may be battery cells and/or capacitors with a prismatic housing.
  • Each of the energy storage elements 14 comprises two poles 16. As examples, the poles of a first energy storage element 14a are referenced with 16a and the poles of a second energy storage element 14b are referenced with 16b. The energy storage elements 14a, 14b are electrically connected in parallel via two interconnector plates 18.
  • Further pairs of electrically parallel connected energy storage elements 14 are arranged in a row with the first pair 14a, 14b. These pairs of energy storage elements are connected in series. As shown in Fig. 1, further rows of energy storage elements 14 may be provided in the energy storage module 10, which also may comprise pairs of electrically parallel connected energy storage elements 14, which are connected in series with each other and with the first row.
  • The first pair of energy storage elements 14a, 14b are connected to an input 20 of the energy storage module 10. The last row of energy storage elements may be connected to a further input.
  • All the energy storage elements 14 are arranged such that their poles 16 are aligned in one plane on one side of the energy storage module 10, which may be seen as the top side. It has to be noted that the energy storage module 10 in general may be attached to an electric and/or hybrid vehicle, such that this side faces in any direction with respect to a vertical direction.
  • The poles 16 are electrically connected via interconnector plates 18, which may be metal plates for example made of copper or aluminium. Each of the interconnector plates 18 may be attached (such as screwed) to two or four poles 16. The interconnector plates 18 may be arranged in one plane.
  • Fig. 1 furthermore shows a sensor board 22, which comprises a rigid circuit board 23 and an electronic circuit, which is adapted for evaluating voltage and temperature measurements in the energy storage module 10. It may be that circuit board 23 comprises a plug into which further components of the sensor board 22 are plugged, such as a further rigid circuit board, which provided the electronic circuit.
  • The sensor board 22 and/or the rigid circuit board 23 are electrically connected via a flexprint 24 with the interconnector plates 18 and thus to the poles 16 of the interconnector plates 18. The flexprint 24 may be arranged in a plane above the poles 16. The flexprint 24 also provides an electrical connection to a temperature sensor 25, which is arranged on an opposite side of the energy storage module 10 with respect to the sensor board.
  • As shown in Fig. 1, the flexprint 24 is composed of strip-like sections 26, which are interconnected in the form of a tree. Some of the strip-like sections 26 are pushed under brackets 28 of the frame 12, which may be L-shaped. The brackets 28 may be provided by a part of the frame 12, which is made of plastics.
  • The flexprint 24 furthermore comprises connector elements 30 at the ends of the sections 26, which are attached to the interconnector plates 18 and to the sensor board 22. The connector elements 30, which arc attached to an interconnector plate 18, may be connected to the interconnector plate 18 by a screw 32.
  • Fig. 2A and 2B show two parts of the flexprint 24 in more detail. The flexprint 24 comprises a one-piece flexible plastics substrate 34, which may be single plastics foil and/or several plastics foils connected to layers of the flexprint 24. Furthermore, the flexprint comprises at least one conducting layer 36, which is provided on or in the flexible plastics substrate 34. For example, the conducting layer 36 is printed on a plastics foil of the flexible plastics substrate 34. The conducting layer 36 may be made of metal material, such as copper.
  • The conducting layer 36 provides conductors of the flexprint 24, such as conductor lines 38 and conductor areas 40.
  • The conductor areas 40 are arranged in the connector elements 30a, 30b, 30c, 30d of the flexprint 24, while the conductor lines 38 are also arranged in the strip-like sections 26 of the flexprint 24.
  • The connector element 30a is used for connecting the flexprint 24 to the sensor board 22 and/or comprises a plurality of conductor areas 40.
  • The connector elements 30b, 30c are used for connecting the flexprint 24 to interconnector plates 18. The conductor lines 38 connected to the corresponding conductor areas 40 are used for transmitting a voltage signal from the interconnector plates 18 to the sensor board 22.
  • The connector element 30c is additionally used for electrically connecting the temperature sensor 25 to the sensor board 22. A corresponding conductor line 38 is not shown and may be provided besides the shown conductor lines or in another layer of the flexprint 24.
  • The connector element 30d is used for solely mechanically fixating the flexprint 24 to the module 10. Its optional contact area 40 is not connected to a conductor line.
  • In general, the flexprint 24 is tree-shaped and comprises a main branch 26a and branching strip sections 26b, which branch off the main branch 26a.
  • The main branch 26a and/or the strip sections 26b may comprise parts 42, which are S-shaped bent to compensate for tolerances of the parts of the module 10, the flexprint 24 is mounted to.
  • In the main branch 26a, a plurality of conductor lines 38 run parallel with each other. In the sections 26b, one or none conductor line 38 is running.
  • All conductor lines 38, which are used for transmitting measurement signals for voltage measurements at poles 16, comprise a fuse section 44, which has a thinner diameter compared to neighbouring sections of the conductor line and which is adapted for melting when an overcurrent is applied. The fuse sections 44 are wave-like or meander-like shaped.
  • Further resistor sections 46, which may be wave-like or meander-like shaped, may be used for resistance matching. A resistor section 46 may have the same diameter compared to neighbouring sections of the conductor line 38. The fuse sections 44 (and also the resistor sections 46) may be provided in the strip sections 26b, which branch off a main branch.
  • A further means for resistance matching are sections or parts 48a, 48b, 48c, 48d of the conductor lines 38, which have different diameters. As shown in Fig. 2A and 2B, there may be sections 48a, 48b, 48c, 48d with four different diameters. Sections 48a, 48b, 48c with a thinner diameter are located nearer to the sensor board 22 than sections 48b, 48c, 48d with a thicker diameter. The diameters of the sections 48a, 48b, 48c, 48d are increasing with increasing distance to the sensor beard 22.
    • LIST OF REFERENCE SYMBOLS
    • 10
    energy storage module
    12
    frame
    14
    energy storage element
    16
    pole
    18
    interconnector plate
    20
    input
    22
    sensor board
    23
    rigid circuit board
    24
    flexprint
    25
    temperature sensor
    26
    section
    26a
    main branch
    26b
    branching strip sections
    28
    bracket
    30
    connector element
    32
    screw
    34
    flexible plastics substrate
    36
    conduction layer
    38
    conductor line
    40
    conductor area
    42
    S-shaped part
    44
    fuse section
    46
    resistor section
    48
    section of conductor line

Claims (13)

  1. An energy storage module (10), comprising:
    a plurality of energy storage elements (14) arranged in a holding frame (12), wherein the energy storage elements (14) are adapted for storing electric energy and are electrically interconnected via their poles (16) between inputs (20) of the energy storage module (10);
    a sensor board (22) comprising a rigid circuit board (23) with an electronic circuit for evaluating voltage measurements in the energy storage module (10);
    a flexprint (24) with conductor lines on or in a flexible plastics substrate for interconnecting the sensor board (22) with electrical conducting parts (18) of the energy storage module (10);
    wherein the flexprint (24) comprises connector elements (30), the connector elements (30) comprising conductor areas (40) printed on the flexible plastics substrate for connecting the flexprint (24) to the electrical conducting parts (18) of the energy storage module (14) and to the sensor board (22);
    wherein the flexprint (24) comprises a main branch (26a) connected to the connector element (30) of the sensor board (22), the main branch (26a) comprising a plurality of parallel running conductor lines (38) characterised in that the flexprint (24) comprises strip sections (26) with ends providing connector elements (30), which strip sections (26) interconnect the connector elements (30) and which comprise at least one conductor line (38) connecting the conductor areas (40) at different connector elements (30);
    wherein the flexprint (24) comprises a plurality of strip sections (26b) branching off the main branch (26a).
  2. The energy storage module (10) of claim 1,
    wherein strip sections (26b) branching off the main branch (26a) are S-shaped bent.
  3. The energy storage module (10) of one of the previous claims,
    wherein a conductor line (38) comprises a fuse section (44), which has a thinner diameter compared to neighbouring sections and which is adapted for melting when an overcurrent is applied.
  4. The energy storage module (10) of claim 3,
    wherein the fuse section (44) is wave-like or meander-like shaped.
  5. The energy storage module (10) of one of the previous claims,
    wherein a fuse section (40) is provided in a strip section (26b) branching off the main branch (26a) of the flexprint (24).
  6. The energy storage module (10) of one of the previous claims,
    wherein a conductor line (38) comprises sections (48) of different diameters;
    wherein sections (48a) of conductor lines (38) with a thinner diameter are located nearer to the sensor board than sections (48b) with a thicker diameter.
  7. The energy storage module (10) of one of the previous claims,
    wherein a temperature sensor (25) of the energy storage module (10) is connected to a connector element (30) of the flexprint (24);
    wherein the temperature sensor (25) is connected via a conductor line of the flexprint (24) to the sensor board (22).
  8. The energy storage module (10) of one of the previous claims,
    wherein the electrical conducting parts (18) to which the flexprint (24) is connected are electrically connected to poles (16) of the energy storage elements (14).
  9. The energy storage module of one of the previous claims,
    wherein the flexprint (24) is arranged in one plane on a side of the energy storage module (10).
  10. The energy storage module (10) of one of the previous claims,
    wherein the holding frame (12) in which the energy storage elements (14) are arranged provides brackets (28), which hold strip sections (26) of the flexprint (24).
  11. The energy storage module (10) of one of the previous claims,
    wherein the energy storage elements (14) are arranged, such that their poles (16) are arranged on a pole side of the energy storage module (10);
    wherein the flexprint (24) is arranged on the pole side.
  12. The energy storage module (10) of claim 11,
    wherein the poles (16) of adjacent energy storage elements (14) are interconnected with interconnector plates (18);
    wherein connector elements (30) of the flexprint (24) are connected to interconnector plates (18).
  13. The energy storage module (10) of one of the previous claims,
    wherein the energy storage elements (14) are battery cells.
EP19165113.2A 2019-03-26 2019-03-26 Flexprint for energy storage module Active EP3715171B1 (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3715171B1 (en) 2019-03-26 2022-07-13 ABB Schweiz AG Flexprint for energy storage module
CN115498367A (en) * 2021-06-18 2022-12-20 北京小米移动软件有限公司 Battery protection board, battery and electronic equipment
DE102021125751A1 (en) * 2021-10-05 2023-04-06 Bayerische Motoren Werke Aktiengesellschaft Electrical energy storage device and motor vehicle

Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE68905230T2 (en) 1988-05-13 1993-07-15 Mang Ets Gerard ELECTRIC CONNECTOR AND PRINTED CIRCUIT WITH SUCH A CONNECTOR.
EP2416435A1 (en) * 2009-03-31 2012-02-08 Sanyo Electric Co., Ltd. Battery module, battery system, and electric vehicle
WO2012075948A1 (en) 2010-12-08 2012-06-14 Byd Company Limited Battery module
US20120231320A1 (en) 2009-10-01 2012-09-13 Bayerische Motoren Werke Ag Device for electrically interconnecting cells in a battery pack by means of cell connectors and battery pack with such cell connectors
CN103367678A (en) 2012-03-28 2013-10-23 日立电线株式会社 Assembled battery wiring member and assembled battery module
JP2013225457A (en) 2012-04-23 2013-10-31 Toyota Boshoku Corp Attachment structure of flexible printed wiring board
US20140370343A1 (en) 2012-10-23 2014-12-18 Nippon Mektron, Ltd. Flexible printed circuit with bus bars, manufacturing method thereof, and battery system
JP2015022965A (en) 2013-07-22 2015-02-02 株式会社デンソー Battery pack
DE102014118188A1 (en) 2014-12-09 2016-06-09 Elringklinger Ag Cell contacting system for an electrochemical device
US20160254515A1 (en) 2013-10-28 2016-09-01 Autonetworks Technologies, Ltd. Wiring module
US20170005371A1 (en) 2015-06-30 2017-01-05 Faraday&Future Inc. Vehicle energy-storage systems
CN206834234U (en) 2017-05-09 2018-01-02 深圳市宝尔爱迪科技有限公司 Big electricity anti-explosion battery group
CN206990767U (en) 2017-08-07 2018-02-09 华霆（合肥）动力技术有限公司 Electric parameter acquisition component and power-supply device
US20180088179A1 (en) 2016-09-26 2018-03-29 Yazaki Corporation Battery monitoring unit
CN207558994U (en) 2017-11-29 2018-06-29 长城汽车股份有限公司 Battery modules component and battery pack
US20190027731A1 (en) 2017-07-24 2019-01-24 Molex, Llc Battery connection module
US20190033387A1 (en) * 2017-07-28 2019-01-31 Denso Corporation Monitoring device
CN109428183A (en) 2017-08-24 2019-03-05 莫列斯有限公司 Battery connection module
CN109473614A (en) 2017-09-08 2019-03-15 莫仕连接器(成都)有限公司 Battery connection module
CN209593916U (en) 2019-01-17 2019-11-05 厦门市铂联科技股份有限公司 A kind of flexible circuit board
US20190389318A1 (en) 2016-12-27 2019-12-26 Yura Corporation Co., Ltd. Bus Bar Assembly and Frame Assembly
EP3715171A1 (en) 2019-03-26 2020-09-30 ABB Schweiz AG Flexprint for energy storage module

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9660244B2 (en) * 2013-09-06 2017-05-23 Johnson Controls Technology Company System and method for establishing connections of a battery module

Patent Citations (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE68905230T2 (en) 1988-05-13 1993-07-15 Mang Ets Gerard ELECTRIC CONNECTOR AND PRINTED CIRCUIT WITH SUCH A CONNECTOR.
EP2416435A1 (en) * 2009-03-31 2012-02-08 Sanyo Electric Co., Ltd. Battery module, battery system, and electric vehicle
US20120231320A1 (en) 2009-10-01 2012-09-13 Bayerische Motoren Werke Ag Device for electrically interconnecting cells in a battery pack by means of cell connectors and battery pack with such cell connectors
WO2012075948A1 (en) 2010-12-08 2012-06-14 Byd Company Limited Battery module
CN103367678A (en) 2012-03-28 2013-10-23 日立电线株式会社 Assembled battery wiring member and assembled battery module
JP2013225457A (en) 2012-04-23 2013-10-31 Toyota Boshoku Corp Attachment structure of flexible printed wiring board
US20140370343A1 (en) 2012-10-23 2014-12-18 Nippon Mektron, Ltd. Flexible printed circuit with bus bars, manufacturing method thereof, and battery system
JP2015022965A (en) 2013-07-22 2015-02-02 株式会社デンソー Battery pack
US20160254515A1 (en) 2013-10-28 2016-09-01 Autonetworks Technologies, Ltd. Wiring module
US20170271642A1 (en) 2014-12-09 2017-09-21 Elringklinger Ag Cell contact-making system for an electrochemical device
DE102014118188A1 (en) 2014-12-09 2016-06-09 Elringklinger Ag Cell contacting system for an electrochemical device
US20170005371A1 (en) 2015-06-30 2017-01-05 Faraday&Future Inc. Vehicle energy-storage systems
US20180088179A1 (en) 2016-09-26 2018-03-29 Yazaki Corporation Battery monitoring unit
US20190389318A1 (en) 2016-12-27 2019-12-26 Yura Corporation Co., Ltd. Bus Bar Assembly and Frame Assembly
CN206834234U (en) 2017-05-09 2018-01-02 深圳市宝尔爱迪科技有限公司 Big electricity anti-explosion battery group
US20190027731A1 (en) 2017-07-24 2019-01-24 Molex, Llc Battery connection module
US20190033387A1 (en) * 2017-07-28 2019-01-31 Denso Corporation Monitoring device
CN206990767U (en) 2017-08-07 2018-02-09 华霆（合肥）动力技术有限公司 Electric parameter acquisition component and power-supply device
CN109428183A (en) 2017-08-24 2019-03-05 莫列斯有限公司 Battery connection module
CN109473614A (en) 2017-09-08 2019-03-15 莫仕连接器(成都)有限公司 Battery connection module
CN207558994U (en) 2017-11-29 2018-06-29 长城汽车股份有限公司 Battery modules component and battery pack
CN209593916U (en) 2019-01-17 2019-11-05 厦门市铂联科技股份有限公司 A kind of flexible circuit board
EP3715171A1 (en) 2019-03-26 2020-09-30 ABB Schweiz AG Flexprint for energy storage module

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